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Added dirty flag to img struct

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This commit is contained in:
Bert 2011-09-11 01:13:45 +02:00
parent 510512714d
commit e2d4b9c791
3 changed files with 69 additions and 29 deletions
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2
Makefile
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@ -1,4 +1,4 @@
VERSION = git-20110910
VERSION = git-20110911
CC = gcc
CFLAGS = -Wall -pedantic -O2

87
image.c
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@ -17,6 +17,7 @@
*/
#define _POSIX_C_SOURCE 200112L
#define _IMAGE_CONFIG
#include <string.h>
#include <unistd.h>
@ -34,10 +35,10 @@
#include "image.h"
#include "options.h"
#include "util.h"
#define _IMAGE_CONFIG
#include "config.h"
#define ZOOMDIFF(z1,z2) ((z1) - (z2) > 0.001 || (z1) - (z2) < -0.001)
enum { MIN_GIF_DELAY = 50 };
float zoom_min;
@ -54,6 +55,8 @@ void img_init(img_t *img, win_t *win) {
img->zoom = options->zoom;
img->zoom = MAX(img->zoom, zoom_min);
img->zoom = MIN(img->zoom, zoom_max);
img->checkpan = 0;
img->dirty = 0;
img->aa = options->aa;
img->alpha = 1;
img->slideshow = 0;
@ -313,6 +316,7 @@ int img_load(img_t *img, const fileinfo_t *file) {
img->w = imlib_image_get_width();
img->h = imlib_image_get_height();
img->dirty = 1;
return 1;
}
@ -339,10 +343,15 @@ void img_close(img_t *img, int decache) {
}
}
void img_check_pan(img_t *img, win_t *win) {
void img_check_pan(img_t *img, win_t *win, int moved) {
int ox, oy;
if (!img || !win)
return;
ox = img->x;
oy = img->y;
if (img->w * img->zoom > win->w) {
if (img->x > 0 && img->x + img->w * img->zoom > win->w)
img->x = 0;
@ -359,23 +368,32 @@ void img_check_pan(img_t *img, win_t *win) {
} else {
img->y = (win->h - img->h * img->zoom) / 2;
}
if (!moved && (ox != img->x || oy != img->y))
img->dirty = 1;
}
int img_fit(img_t *img, win_t *win) {
float oz, zw, zh;
float z, zmax, zw, zh;
if (!img || !win)
if (!img || !win || img->scalemode == SCALE_ZOOM)
return 0;
oz = img->zoom;
zmax = img->scalemode == SCALE_DOWN ? 1.0 : zoom_max;
zw = (float) win->w / (float) img->w;
zh = (float) win->h / (float) img->h;
img->zoom = MIN(zw, zh);
img->zoom = MAX(img->zoom, zoom_min);
img->zoom = MIN(img->zoom, zoom_max);
z = MIN(zw, zh);
z = MAX(z, zoom_min);
z = MIN(z, zmax);
return oz != img->zoom;
if (ZOOMDIFF(z, img->zoom)) {
img->zoom = z;
img->dirty = 1;
return 1;
} else {
return 0;
}
}
void img_render(img_t *img, win_t *win) {
@ -385,11 +403,7 @@ void img_render(img_t *img, win_t *win) {
if (!img || !img->im || !win)
return;
if (img->scalemode != SCALE_ZOOM) {
img_fit(img, win);
if (img->scalemode == SCALE_DOWN && img->zoom > 1.0)
img->zoom = 1.0;
}
if (!img->re) {
/* rendered for the first time */
@ -405,10 +419,13 @@ void img_render(img_t *img, win_t *win) {
}
if (img->checkpan) {
img_check_pan(img, win);
img_check_pan(img, win, 0);
img->checkpan = 0;
}
if (!img->dirty)
return;
/* calculate source and destination offsets */
if (img->x < 0) {
sx = -img->x / img->zoom;
@ -444,6 +461,8 @@ void img_render(img_t *img, win_t *win) {
imlib_render_image_part_on_drawable_at_size(sx, sy, sw, sh, dx, dy, dw, dh);
win_draw(win);
img->dirty = 0;
}
int img_fit_win(img_t *img, win_t *win) {
@ -466,7 +485,12 @@ int img_center(img_t *img, win_t *win) {
img->x = (win->w - img->w * img->zoom) / 2;
img->y = (win->h - img->h * img->zoom) / 2;
return ox != img->x || oy != img->y;
if (ox != img->x || oy != img->y) {
img->dirty = 1;
return 1;
} else {
return 0;
}
}
int img_zoom(img_t *img, win_t *win, float z) {
@ -478,11 +502,12 @@ int img_zoom(img_t *img, win_t *win, float z) {
img->scalemode = SCALE_ZOOM;
if (z != img->zoom) {
if (ZOOMDIFF(z, img->zoom)) {
img->x = win->w / 2 - (win->w / 2 - img->x) * z / img->zoom;
img->y = win->h / 2 - (win->h / 2 - img->y) * z / img->zoom;
img->zoom = z;
img->checkpan = 1;
img->dirty = 1;
return 1;
} else {
return 0;
@ -527,9 +552,14 @@ int img_move(img_t *img, win_t *win, int dx, int dy) {
img->x += dx;
img->y += dy;
img_check_pan(img, win);
img_check_pan(img, win, 1);
return ox != img->x || oy != img->y;
if (ox != img->x || oy != img->y) {
img->dirty = 1;
return 1;
} else {
return 0;
}
}
int img_pan(img_t *img, win_t *win, direction_t dir, int screen) {
@ -546,7 +576,6 @@ int img_pan(img_t *img, win_t *win, direction_t dir, int screen) {
case DIR_DOWN:
return img_move(img, win, 0, win->h / (screen ? 1 : 5) * -1);
}
return 0;
}
@ -574,9 +603,14 @@ int img_pan_edge(img_t *img, win_t *win, direction_t dir) {
break;
}
img_check_pan(img, win);
img_check_pan(img, win, 1);
return ox != img->x || oy != img->y;
if (ox != img->x || oy != img->y) {
img->dirty = 1;
return 1;
} else {
return 0;
}
}
void img_rotate(img_t *img, win_t *win, int d) {
@ -599,6 +633,7 @@ void img_rotate(img_t *img, win_t *win, int d) {
img->h = tmp;
img->checkpan = 1;
img->dirty = 1;
}
void img_rotate_left(img_t *img, win_t *win) {
@ -610,11 +645,13 @@ void img_rotate_right(img_t *img, win_t *win) {
}
void img_toggle_antialias(img_t *img) {
if (img && img->im) {
if (!img || !img->im)
return;
img->aa ^= 1;
imlib_context_set_image(img->im);
imlib_context_set_anti_alias(img->aa);
}
img->dirty = 1;
}
int img_frame_goto(img_t *img, int n) {
@ -631,6 +668,7 @@ int img_frame_goto(img_t *img, int n) {
img->w = imlib_image_get_width();
img->h = imlib_image_get_height();
img->checkpan = 1;
img->dirty = 1;
return 1;
}
@ -664,5 +702,6 @@ int img_frame_animate(img_t *img, int restart) {
}
img->multi.animate = 1;
img->dirty = 1;
return img->multi.frames[img->multi.sel].delay;
}

1
image.h
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@ -46,6 +46,7 @@ typedef struct {
unsigned char re;
unsigned char checkpan;
unsigned char dirty;
unsigned char aa;
unsigned char alpha;